CN202602062U - Manual operation hydraulic tong - Google Patents
Manual operation hydraulic tong Download PDFInfo
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- CN202602062U CN202602062U CN2012202254511U CN201220225451U CN202602062U CN 202602062 U CN202602062 U CN 202602062U CN 2012202254511 U CN2012202254511 U CN 2012202254511U CN 201220225451 U CN201220225451 U CN 201220225451U CN 202602062 U CN202602062 U CN 202602062U
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Abstract
The utility model relates to a manual operation hydraulic tong, in particular to a manual operation hydraulic tong which can be used for reliable compression joint of copper/aluminum cables and terminals. The manual operation hydraulic tong comprises a hydraulic tong body and an electric valve extractor, wherein an oil cylinder and an oil bag are arranged in the hydraulic tong body. The manual operation hydraulic tong is characterized by further comprising an oil hitting assembly and a pressure adjusting and releasing valve. The manual operation hydraulic tong is reasonable in structural design, convenient to operate, practical, and better than a traditional hydraulic tong. Compared with an electric hydraulic tong, a charging hydraulic tong and a split type hydraulic tong, the manual operation hydraulic tong is mostly characterized in that a power supply is not needed to provide motive power, and operators operate by hand. The manual operation hydraulic tong is small in size, large in output force, suitable for being used in a no-power environment, a humid environment, a dusty environment or other severe environments to form compensation relationships with hydraulic tongs in other forms. Meanwhile, the manual operation hydraulic tong is provided with an automatic pressure adjusting and releasing function, and also can be used for reducing of pressure by hand.
Description
Technical field
The utility model relates to a kind of hand-hydraulic pincers, and particularly a kind of hand-hydraulic that copper/aluminium cable and terminal are carried out reliable crimping clamps.
Background technology
Traditional hand-hydraulic pincers quality is bigger than normal, operates requiring height for the workman, inefficiency, and misoperation easily, the performance accuracy of hand-hydraulic pincers is low simultaneously can not satisfy the practical operation needs.The hand-hydraulic pincers bring great convenience owing to little, the in light weight characteristics such as (one-handed performances) of its volume to electric power system installation and maintenance in the market, but its decompressor is simple in structure, and mostly piston is hand-reset, does not possess the piston auto-reset function.
The utility model content
The purpose of the utility model is to overcome existing the problems referred to above in the prior art, and provides a kind of reasonable in design, easy to operate, practical hand-hydraulic to clamp.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: these hand-hydraulic pincers, comprise a hydraulic pressure caliper and a flexible handle, and be provided with oil cylinder and oil sac in the hydraulic pressure caliper; It is characterized in that; Also comprise a dozen oil valve assemblies and pressure regulation pressure-relief valve, be provided with the valve module of buying oil between oil cylinder and the oil sac, the valve module of buying oil links with oil cylinder and oil sac respectively; The pressure regulation pressure-relief valve is arranged on oil sac inside, and links with oil cylinder and oil sac respectively.
As preferably, the described valve module of buying oil comprises the valve piston of buying oil, the valve pressure cap of buying oil, the stage clip of buying oil, spring lead, unidirectional valve one and unidirectional valve two; Be provided with a dozen cylinder bodies between described oil cylinder and oil sac, this cylinder body of buying oil is separated by through the valve pressure cap of buying oil and is divided into upper cylinder half cavity and following cylinder cavity, and the valve pressure cap of buying oil closely cooperates with the cylinder body of buying oil; Buy oil and have oil guiding hole on the valve pressure cap; Having a newel post hole on the central axial direction of the said valve pressure cap of buying oil, matches with the newel post of spring lead front end in this newel post hole, and the height of newel post is greater than the degree of depth in newel post hole; The described compression spring sleeve of buying oil is contained on the spring lead; The spring lead is movably arranged on down in the cylinder cavity, and described oil sac communicates with following cylinder cavity through unidirectional valve one, and the upper cylinder half cavity communicates with oil cylinder through unidirectional valve two; The described valve piston of buying oil is movably arranged on the upper cylinder half cavity, and described flexible handle flexibly connects with the valve piston of buying oil.Manually buying oil does not need the power supply power supply, leans on operating personnel manually can operate, and the valve piston of buying oil simultaneously has auto-reset function, has improved the efficient of buying oil greatly.
As preferably, described pressure regulation pressure-relief valve comprises pressure-reducing valve thimble, pressure-reducing valve pressure cap, pressure-reducing valve pressure modulating opening, relief spring and adjustment knob, is provided with a decompression cylinder between described oil cylinder and oil sac; Be provided with the pressure-reducing valve pressure cap in this decompression cylinder, this decompression cylinder is separated by to be divided into through the pressure-reducing valve pressure cap and is pressed cavity and press down cavity, and the pressure-reducing valve pressure cap closely cooperates with the decompression cylinder; Relief spring is sleeved on the pressure-reducing valve thimble; One end of relief spring links to each other with the pressure-reducing valve pressure cap, and the other end links to each other with the adjustment knob, and the cross-under of described pressure-reducing valve thimble is on the pressure-reducing valve pressure cap; The needle point of this pressure-reducing valve thimble protrudes in the pressure-reducing valve pressure cap; Needle point matches with the pressure-reducing valve pressure modulating opening, and described oil cylinder communicates through the pressure-reducing valve pressure modulating opening with the decompression cylinder, and the decompression cylinder communicates with oil sac through spill port; Described pressure-reducing valve thimble is provided with the adjustment knob, and oil cylinder links through emptying passage and decompression cylinder.Carry the pressure regulation pressure relief, convenient safety in practical operation.
As preferably, the body of rod of the described valve piston of buying oil is provided with sealing ring.Further increased the sealing property of the valve module of buying oil.
As preferably, cover is placed with dust ring on the described valve piston of buying oil.Can play the dustproof effect.
As preferably, described pressure-reducing valve pressure cap is provided with a damping hole.Can be used as the emptying path when automatically reseting.
As preferably, described adjustment knob is threaded on the decompression cylinder, and the cross-under of pressure-reducing valve thimble is in the adjustment knob.But manual adjustment oil pressure.
As preferably, the below of described spill port is provided with a through hole, and decompression cylinder and oil sac link through through hole.But this through hole UNICOM oil sac makes the air or the oil of pressure-reducing valve pressure cap below can import oil sac smoothly, thereby guarantees that the pressure regulation pressure-relief valve does not have back pressure, and the pressure adjustment is more stable.
As preferably, comprise manual pressure relief assembly, manually pressure relief assembly comprises release cavity, unidirectional valve three, release back-moving spring, release thimble, unloader pin and release handle; Be provided with unidirectional valve three in the release cavity, have on the unidirectional valve three and unload oilhole, an end of release thimble is provided with newel post; This newel post with unload oilhole and match; The height of newel post is set with the release back-moving spring greater than the degree of depth of unloading oilhole on the release thimble, the other end of release thimble is connected on the release handle; It is external that the release handle is movably connected in pressure-releasing cavity through unloader pin; Be provided with steel ball in the unidirectional valve, the diameter of steel ball is greater than the diameter that unloads oilhole, and the release cavity links through emptying passage and oil cylinder.Can realize manual release, guarantee that product is safe in utilization.
As preferably, described release thimble is provided with sealing ring.Further increased the sealing property of manual pressure relief assembly.
The beneficial effect of the utility model is: be superior to traditional hydraulic tongs; Hand-hydraulic pincers its maximum characteristics with respect to electric hydaulic pincers, charged electric hydraulic tongs and split type hydraulic tongs are not need power supply that power is provided; Operating personnel's manual mode of operation, the little power output of volume is big, and the hydraulic tongs that is adapted at working under the adverse circumstances such as non-transformer, wet environment and dust are very big with other form forms complementary relationship; Carry the automatic Regulation pressure relief simultaneously, also enable manual decompression.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the structural representation of valve module of buying oil.
Fig. 3 is the cutaway view of A-A among Fig. 2.
Fig. 4 is the structural representation of pressure regulation pressure-relief valve.
Fig. 5 is the structural representation of manual pressure relief assembly.
Fig. 6 is the structural representation of pressure regulation pressure-relief valve and manual pressure relief assembly.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Embodiment: referring to Fig. 1-Fig. 6; The utility model embodiment comprises a hydraulic pressure caliper 1, flexible handle 2, buy oil valve module 3 and pressure regulation pressure-relief valve 4; Be provided with oil cylinder 5 and oil sac 6 in the hydraulic pressure caliper 1, be provided with the valve module 3 of buying oil between oil cylinder 5 and the oil sac 6, the valve module 3 of buying oil links with oil cylinder 5 and oil sac 6 respectively; Pressure regulation pressure-relief valve 4 is arranged on oil sac 6 inside, and links with oil cylinder 5 and oil sac 6 respectively.Hydraulic pressure caliper 1 is a prior art, is provided with piston 7 in the oil cylinder 5, buy oil spring 45 and following mould bases 46.
The valve module 3 of buying oil in the present embodiment comprises the valve piston 8 of buying oil, the valve pressure cap 9 of buying oil, the stage clip 10 of buying oil, spring lead 11, unidirectional valve 1 and unidirectional valve 2 13, and 6 of oil cylinder 5 and oil sacs are provided with a dozen cylinder bodies 14; This cylinder body 14 of buying oil is separated by through the valve pressure cap 9 of buying oil and is divided into upper cylinder half cavity 15 and following cylinder cavity 16, and the valve pressure cap 9 of buying oil closely cooperates with the cylinder body 14 of buying oil, and has oil guiding hole 17 on the valve pressure cap 9 of buying oil; Have a newel post hole 18 on the central axial direction of valve pressure cap 9 of buying oil; Match with the newel post 19 of spring lead 11 front ends in this newel post hole 18, the height of newel post 19 is greater than the degree of depth in newel post hole 18, and the stage clip 10 of buying oil is sleeved on the spring lead 11; Spring lead 11 is movably arranged on down in the cylinder cavity 16; Oil sac 6 communicates with following cylinder cavity 16 through unidirectional valve 1, and upper cylinder half cavity 15 communicates with oil cylinder 5 through unidirectional valve 2 13, and the valve piston 8 of buying oil is movably arranged on the upper cylinder half cavity 15; In order further to have increased the sealing property of the valve module 3 of buying oil; The body of rod of valve piston 8 of buying oil is provided with sealing ring 20, and cover is placed with dust ring 21 on the valve piston 8 of buying oil simultaneously, can play the dustproof effect.
Pressure regulation pressure-relief valve 4 in the present embodiment comprises pressure-reducing valve thimble 22, pressure-reducing valve pressure cap 23, pressure-reducing valve pressure modulating opening 24, relief spring 25 and adjustment knob 26; 6 of oil cylinder 5 and oil sacs are provided with a decompression cylinder 27, are provided with pressure-reducing valve pressure cap 23 in this decompression cylinder 27, and decompression cylinder 27 is separated by to be divided into through pressure-reducing valve pressure cap 23 and is pressed cavity 28 and press down cavity 29; Pressure-reducing valve pressure cap 23 closely cooperates with decompression cylinder 27; Relief spring 25 is sleeved on the pressure-reducing valve thimble 22, and an end of relief spring 25 links to each other with pressure-reducing valve pressure cap 23, and the other end links to each other with adjustment knob 26; 22 cross-under of pressure-reducing valve thimble are on pressure-reducing valve pressure cap 23; The needle point 30 of this pressure-reducing valve thimble 22 protrudes in pressure-reducing valve pressure cap 23, and needle point 30 matches with pressure-reducing valve pressure modulating opening 24, and oil cylinder 5 communicates through pressure-reducing valve pressure modulating opening 24 with decompression cylinder 27; Decompression cylinder 27 communicates with oil sac 6 through spill port 31, and oil cylinder 5 links through emptying passage 32 and decompression cylinder 27.The pressure-reducing valve thimble 22 of the utility model is provided with adjustment knob 26; Adjustment knob 26 is threaded on the decompression cylinder 27; 22 cross-under of pressure-reducing valve thimble are in adjustment knob 26; Pressure-reducing valve thimble 22 and adjustment knob 26 be through relief spring 25 tensioners, but the decrement of the relief spring 25 between manual adjustment pressure-reducing valve thimble 22 and the adjustment knob 26 changes the size of expanding force and then realizes the adjustment of oil pressure.The below of spill port 31 is provided with a through hole 33; Decompression cylinder 27 links through through hole 33 with oil sac 6, but these through hole 33 UNICOM's oil sacs 6 make the air of pressure-reducing valve pressure cap 23 belows or oil can import oil sac 6 smoothly; Thereby guarantee that the pressure regulation pressure-relief valve does not have back pressure, the pressure adjustment is more stable.In addition, also have a damping hole 34 on the pressure-reducing valve pressure cap 23, can be used as the emptying path when automatically reseting.
Present embodiment also comprises manual pressure relief assembly 35, and manually pressure relief assembly 35 comprises release cavity 36, unidirectional valve 3 37, release back-moving spring 38, release thimble 39, unloader pin 40 and release handle 41, is provided with unidirectional valve 3 37 in the release cavity 36; Have on the unidirectional valve 3 37 and unload oilhole 42; One end of release thimble 39 is provided with newel post 19, and this newel post 19 matches with unloading oilhole 42, and the height of newel post 19 is greater than the degree of depth of unloading oilhole 42; Be set with release back-moving spring 38 on the release thimble 39; The other end of release thimble 39 is connected on the release handle 41, and release handle 41 is movably connected in outside the release cavity 36 through unloader pin 40, is provided with steel ball 43 in the unidirectional valve 3 37; The diameter of steel ball 43 is greater than the diameter that unloads oilhole 42, and release cavity 36 links through emptying passage 32 and oil cylinder 5.Can realize manual release, guarantee that product is safe in utilization.The release thimble 39 of this product is provided with sealing ring 20, has further increased the sealing property of manual pressure relief assembly 35.
This product is under the valve operating state of buying oil; When the valve piston 8 of buying oil is pulled out by flexible handle 2 through stage clip 10 jack-up of buying oil buy oil valve pressure cap 9 make hydraulic oil through unidirectional valve 1 from oil sac 6 inspiration hydraulic oil to following cylinder cavity 16, simultaneously the hydraulic oil in the upper cylinder half cavity 15 is depressed into oil cylinder 5 through unidirectional valve 2 13; The valve piston 8 of when the valve piston 8 of buying oil is compressed into by flexible handle 2, buying oil has backed down the newel post 19 on the spring lead 11; This moment, the spring lead 11 and 9 of the valve pressure caps of buying oil formed an Oil Guide gap 44; The hydraulic oil of following cylinder cavity 16 flow to upper cylinder half cavity 15 from this Oil Guide gap 44 along oil guiding hole 17; Hydraulic oil in one 12 valves of buying oil of unidirectional valve this moment is blocked and is made it can not flow back to oil sac 6, and the valve module 3 of like this buying oil is constantly delivered to the hydraulic oil in the oil sac 6 in the oil cylinder 5.
The operating state of hydraulic system is divided into two states in whole crimping process.First kind of state is the working condition of piston 7 when not receiving load; The traveling time that requires this time piston 7 to move quickly into can save like this at lost motion by load situation improves crimping efficient, and 5 li buy oil toward oil cylinder this time mainly is that the valve pressure cap 9 of buying oil works with the stage clip 10 of buying oil; Second kind of state is that piston 7 is receiving the working condition of load, but the many pressure when needed oil mass does not have zero load in this time oil cylinder 5 can be elevated to certain value gradually, and mainly be to work by the action that the valve piston 8 of buying oil is pressed into and pulls out this time.In this two states, buying oil the diameter of valve pressure cap 9 will be bigger than the discharge capacity second kind of state under than the big first kind of state so of the diameter of the valve piston 8 of buying oil discharge capacity down, and piston 7 translational speeds will fast requirement when satisfying zero load.When touching load (load force can from first kind operating state change second kind operating state greater than the spring 45 compressed elastic force of buying oil when buying oil valve pressure cap 9 areas divided by piston 7 areas) get into second kind of operating state since the diameter of the valve pressure cap 9 of buying oil to be pressed onto same pressure operating state one needed force rate operating state two needed power greatly so than the diameter of the valve piston 8 of buying oil big, so just satisfy the big requirement of the little power output of volume.
The pressure relief native system can carry out release through dual mode: first kind promotes steel ball 43 that release thimble 39 backs down unidirectional valve 3 37 and makes hydraulic oil flow back to oil sac 6 to realize mould bases 46 and piston 7 hand-resets down through manually pushing release handle 41; The second way is that the automatically unloading mode both can be backed down pressure-reducing valve thimble 22 when the pressure of 5 li of oil cylinders arrives upper pressure limit, waits the piston 7 back pressure-reducing valve thimble 22 that resets just can be depressurized spring 25 and be pressed onto original make position.
1, hand-reset mode theory analysis:
Needing only release thimble 39 applied forces＞unidirectional valve 3 37 steel balls 43 suffered pressure during hand-reset can realize resetting.
2, the automatically reset operation principle and the theory analysis of mode:
, can back down the pressure of hydraulic oil the needle point 30 of pressure-reducing valve thimble 22 when arriving upper pressure limit through pressure-reducing valve pressure modulating opening 24; Hydraulic oil just gets into going up of pressure-reducing valve pressure cap 23 tops through pressure-reducing valve pressure modulating opening 24 and presses cavity 28; The hydraulic oil of last pressure cavity 28 constantly increase up to fill up whole go up press cavity 28 at this moment some hydraulic oil from pressure-reducing valve pressure cap 23, flow out both damping holes 34 of this aperture the aperture; But the oil mass that the diameter of pressure-reducing valve pressure modulating opening 24 flows out from pressure-reducing valve pressure modulating opening 24 more greatly like this is greater than the oil mass that spills out from damping hole 34; The pressure of last pressure cavity 28 can increase the cylinder 27 interior pressure actions that reduce pressure so and also can increase gradually up to greater than just flowing out the pressure-reducing valve pressure cap 23 whole hydraulic oil that turn down in decompression cylinder 27 through spill port 31 in the power on the pressure-reducing valve pressure cap 23, has discharged pressure.
Above content described in this specification only is to be illustrated what the utility model structure did.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment; Only otherwise depart from the structure of the utility model or surmount the defined scope of these claims, all should belong to the protection range of the utility model.
Claims (10)
1. a hand-hydraulic clamps; Comprise a hydraulic pressure caliper and a flexible handle, be provided with oil cylinder and oil sac in the hydraulic pressure caliper, it is characterized in that: also comprise a dozen oil valve assemblies and pressure regulation pressure-relief valve; Be provided with the valve module of buying oil between oil cylinder and the oil sac; The valve module of buying oil links with oil cylinder and oil sac respectively, and the pressure regulation pressure-relief valve is arranged on oil sac inside, and links with oil cylinder and oil sac respectively.
2. hand-hydraulic according to claim 1 pincers is characterized in that: the described valve module of buying oil comprises the valve piston of buying oil, the valve pressure cap of buying oil, the stage clip of buying oil, spring lead, unidirectional valve one and unidirectional valve two; Be provided with a dozen cylinder bodies between described oil cylinder and oil sac, this cylinder body of buying oil is separated by through the valve pressure cap of buying oil and is divided into upper cylinder half cavity and following cylinder cavity, and the valve pressure cap of buying oil closely cooperates with the cylinder body of buying oil; Buy oil and have oil guiding hole on the valve pressure cap; Having a newel post hole on the central axial direction of the said valve pressure cap of buying oil, matches with the newel post of spring lead front end in this newel post hole, and the height of newel post is greater than the degree of depth in newel post hole; The described compression spring sleeve of buying oil is contained on the spring lead; The spring lead is movably arranged on down in the cylinder cavity, and described oil sac communicates with following cylinder cavity through unidirectional valve one, and the upper cylinder half cavity communicates with oil cylinder through unidirectional valve two; The described valve piston of buying oil is movably arranged on the upper cylinder half cavity, and described flexible handle flexibly connects with the valve piston of buying oil.
3. hand-hydraulic pincers according to claim 1 and 2, it is characterized in that: described pressure regulation pressure-relief valve comprises pressure-reducing valve thimble, pressure-reducing valve pressure cap, pressure-reducing valve pressure modulating opening, relief spring and adjustment knob, is provided with a decompression cylinder between described oil cylinder and oil sac; Be provided with the pressure-reducing valve pressure cap in this decompression cylinder, this decompression cylinder is separated by to be divided into through the pressure-reducing valve pressure cap and is pressed cavity and press down cavity, and the pressure-reducing valve pressure cap closely cooperates with the decompression cylinder; Relief spring is sleeved on the pressure-reducing valve thimble; One end of relief spring links to each other with the pressure-reducing valve pressure cap, and the other end links to each other with the adjustment knob, and the cross-under of described pressure-reducing valve thimble is on the pressure-reducing valve pressure cap; The needle point of this pressure-reducing valve thimble protrudes in the pressure-reducing valve pressure cap; Needle point matches with the pressure-reducing valve pressure modulating opening, and described oil cylinder communicates through the pressure-reducing valve pressure modulating opening with the decompression cylinder, and the decompression cylinder communicates with oil sac through spill port; Described pressure-reducing valve thimble is provided with the adjustment knob, and oil cylinder links through emptying passage and decompression cylinder.
4. hand-hydraulic pincers according to claim 2, it is characterized in that: the body of rod of the described valve piston of buying oil is provided with sealing ring.
5. hand-hydraulic pincers according to claim 2, it is characterized in that: cover is placed with dust ring on the described valve piston of buying oil.
6. hand-hydraulic pincers according to claim 3, it is characterized in that: described pressure-reducing valve pressure cap is provided with a damping hole.
7. hand-hydraulic pincers according to claim 3 is characterized in that: described adjustment knob is threaded on the decompression cylinder, and the cross-under of pressure-reducing valve thimble is in the adjustment knob.
8. hand-hydraulic pincers according to claim 3, it is characterized in that: the below of described spill port is provided with a through hole, and decompression cylinder and oil sac link through through hole.
9. hand-hydraulic pincers according to claim 1 is characterized in that: also comprise manual pressure relief assembly, manually pressure relief assembly comprises release cavity, unidirectional valve three, release back-moving spring, release thimble, unloader pin and release handle; Be provided with unidirectional valve three in the release cavity, have on the unidirectional valve three and unload oilhole, an end of release thimble is provided with newel post; This newel post with unload oilhole and match; The height of newel post is set with the release back-moving spring greater than the degree of depth of unloading oilhole on the release thimble, the other end of release thimble is connected on the release handle; It is external that the release handle is movably connected in pressure-releasing cavity through unloader pin; Be provided with steel ball in the unidirectional valve, the diameter of steel ball is greater than the diameter that unloads oilhole, and the release cavity links through emptying passage and oil cylinder.
10. hand-hydraulic pincers according to claim 9, it is characterized in that: described release thimble is provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202254511U CN202602062U (en) | 2012-05-19 | 2012-05-19 | Manual operation hydraulic tong |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202254511U CN202602062U (en) | 2012-05-19 | 2012-05-19 | Manual operation hydraulic tong |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202602062U true CN202602062U (en) | 2012-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202254511U Expired - Lifetime CN202602062U (en) | 2012-05-19 | 2012-05-19 | Manual operation hydraulic tong |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202602062U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127939A (en) * | 2015-08-11 | 2015-12-09 | 黑龙江大学 | Portable hydraulic pliers for crimping bead string joints |
| CN106058604A (en) * | 2016-06-21 | 2016-10-26 | 胡俊 | Pressure-adjustable electric hydraulic clamp used for power line repairing |
| CN106584310A (en) * | 2016-12-02 | 2017-04-26 | 国网江苏省电力公司无锡供电公司 | Portable hydraulic clamp |
| CN115021045A (en) * | 2022-08-08 | 2022-09-06 | 徐州苏佰曼工具制造有限公司 | Adjustable hydraulic clamp special for electric power overhaul |
-
2012
- 2012-05-19 CN CN2012202254511U patent/CN202602062U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127939A (en) * | 2015-08-11 | 2015-12-09 | 黑龙江大学 | Portable hydraulic pliers for crimping bead string joints |
| CN105127939B (en) * | 2015-08-11 | 2017-01-25 | 黑龙江大学 | Portable hydraulic pliers for crimping bead string joints |
| CN106058604A (en) * | 2016-06-21 | 2016-10-26 | 胡俊 | Pressure-adjustable electric hydraulic clamp used for power line repairing |
| CN106584310A (en) * | 2016-12-02 | 2017-04-26 | 国网江苏省电力公司无锡供电公司 | Portable hydraulic clamp |
| CN115021045A (en) * | 2022-08-08 | 2022-09-06 | 徐州苏佰曼工具制造有限公司 | Adjustable hydraulic clamp special for electric power overhaul |
| CN115021045B (en) * | 2022-08-08 | 2022-10-28 | 徐州苏佰曼工具制造有限公司 | Adjustable hydraulic clamp special for electric power overhaul |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |